Place the "Balls" folder inside your Sider folder & add the line cpk.root = ".\Balls" to your sider.ini ..Make sure you have no other/old ball packs installed in either cpk.root folders or the PES2019 download folder, this is an AIO pack..no other packs are needed.

Install:

Ball-Server version

See here for initial Ball-Server module install [ Ball Server Module for PES 2019 ]. Once Ball-Server is installed you can update the ball pack by following the info below

How to apply the ball pack update for Ball-Server: download the ball-server pack update from the download link, extract the archive and overwrite the current content folder in your Sider with the content folder from the update pack